I was close to pulling the trigger on one, since I also doodle a lot. Then I realised it would be yet another gadget that annoys me because it does annoying gadget things.

Paper doesn't require an account, or updates. It doesn't require repeating a task because it didn't get it. It doesn't have a community that tries to pick up where the manufacturer left off. It's also a hundredth of the price.

That effect is heavily driven by writing things down in your own words - writing by hand essentially forces you to do it, keyboard lets you get away with transcription, which doesn't help.